ES374231A1 - Circuit breaker with improved latch reset - Google Patents

Circuit breaker with improved latch reset

Info

Publication number
ES374231A1
ES374231A1 ES374231A ES374231A ES374231A1 ES 374231 A1 ES374231 A1 ES 374231A1 ES 374231 A ES374231 A ES 374231A ES 374231 A ES374231 A ES 374231A ES 374231 A1 ES374231 A1 ES 374231A1
Authority
ES
Spain
Prior art keywords
engages
contacts
reset
latch member
circuit breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES374231A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES374231A1 publication Critical patent/ES374231A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/42—Contact welding considerations

Abstract

A circuit-breaker 3 cannot be reset after tripping if the contacts have failed to open, e.g. because of welding. In normal resetting, a radius 171 at the knee 61 of the toggle 53, 55 engages a surface on a latch member 71 to pivot it against a spring 93 to move a trip bar 73 to a latching position in which a surface 89 on the trip bar 73 engages a surface 91 on the latch member 71, member 71 including a roller 77 under which engages the hook-shaped end 95 of a releasable trip member 57. If the contacts 19, 21 are welded, the toggle 53, 55 is restrained from moving sufficiently to actuate the latch member 71 to its latching position and, if the handle 49 is released after a resetting attempt, the tension spring 67 automatically moves the handle back to the "on" position, thus indicating that the breaker has not reset and the contacts are closed.
ES374231A 1968-12-05 1969-12-04 Circuit breaker with improved latch reset Expired ES374231A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78151468A 1968-12-05 1968-12-05

Publications (1)

Publication Number Publication Date
ES374231A1 true ES374231A1 (en) 1971-12-16

Family

ID=25122986

Family Applications (1)

Application Number Title Priority Date Filing Date
ES374231A Expired ES374231A1 (en) 1968-12-05 1969-12-04 Circuit breaker with improved latch reset

Country Status (4)

Country Link
US (1) US3525959A (en)
ES (1) ES374231A1 (en)
FR (1) FR2025422A1 (en)
GB (1) GB1263819A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605052A (en) * 1970-01-22 1971-09-14 Gen Electric Avoidance of switching device false off handle indication
US3605051A (en) * 1970-01-22 1971-09-14 Gen Electric Avoidance of switching device false off handle indication
US3614685A (en) * 1970-02-06 1971-10-19 Westinghouse Electric Corp Circuit breaker with handle-indicating means
US3873950A (en) * 1973-05-30 1975-03-25 Vladislav Yakovlevich Guschin Air circuit breaker
US3849747A (en) * 1973-11-28 1974-11-19 Westinghouse Electric Corp Circuit breaker with handle indicating means
FR2360171A1 (en) * 1976-07-30 1978-02-24 Unelec CIRCUIT BREAKER CONTROL MECHANISM
US4253075A (en) * 1979-01-15 1981-02-24 Gould Inc. Latching system for contact operating mechanism
FR2506066A1 (en) * 1981-05-18 1982-11-19 Merlin Gerin MANEUVERING MECHANISM OF A LOW VOLTAGE MULTIPOLAR ELECTRIC CIRCUIT BREAKER
IT8223118V0 (en) * 1982-10-07 1982-10-07 Sace Spa ELECTRIC SWITCH WITH STOPPING THE CONTROL LEVER STROKE IN CASE OF WELDING THE CONTACTS.
US4567455A (en) * 1983-04-28 1986-01-28 Mitsubishi Denki K.K. Circuit interrupter
US4620171A (en) * 1984-01-09 1986-10-28 Westinghouse Electric Corp. Molded case circuit breaker with resettable combined undervoltage and manual trip mechanism
US4630019A (en) * 1984-09-28 1986-12-16 Westinghouse Electric Corp. Molded case circuit breaker with calibration adjusting means for a bimetal
FR2583570B1 (en) * 1985-06-12 1988-07-15 Merlin Gerin MOLDED CASE CIRCUIT BREAKER.
US4829147A (en) * 1986-10-24 1989-05-09 Square D Company Circuit breaker with positive contact indication
US4827231A (en) * 1988-01-28 1989-05-02 Westinghouse Electric Corp. Molded case circuit breaker with viewing window and sliding barrier
US5213206A (en) * 1991-05-29 1993-05-25 Westinghouse Electric Corp. Circuit breaker with positive on/off interlock
US5184717A (en) * 1991-05-29 1993-02-09 Westinghouse Electric Corp. Circuit breaker with welded contacts
US5165532A (en) * 1991-05-29 1992-11-24 Westinghouse Electric Corp. Circuit breaker with interlock for welding contacts
US5973280A (en) * 1998-03-23 1999-10-26 Eaton Corporation Circuit breaker with an anti-lift pivot handle
US6166344A (en) * 1999-03-23 2000-12-26 General Electric Company Circuit breaker handle block
US7348514B2 (en) * 2006-04-12 2008-03-25 Eaton Corporation Slot motor and circuit breaker including the same
US9230768B2 (en) * 2012-02-28 2016-01-05 Siemens Aktiengesellschaft Circuit breaker thermal-magnetic trip units and methods
US10984974B2 (en) * 2018-12-20 2021-04-20 Schneider Electric USA, Inc. Line side power, double break, switch neutral electronic circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306235A (en) * 1941-08-06 1942-12-22 Gen Electric Circuit breaker
US2426880A (en) * 1942-03-23 1947-09-02 Square D Co Circuit breaker
US3460075A (en) * 1967-03-07 1969-08-05 Westinghouse Electric Corp Circuit breaker with improved latch and trip structures

Also Published As

Publication number Publication date
FR2025422A1 (en) 1970-09-11
GB1263819A (en) 1972-02-16
US3525959A (en) 1970-08-25

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